SAA7385GP Philips Semiconductors, SAA7385GP Datasheet - Page 55

• Manufacturer Part Number: SAA7385GP
• Description: Error correction and host interface IC for CD-ROM SEQUOIA
• Manufacturer: Philips Semiconductors

Philips Semiconductors
15.8
V
1996 Jun 19
DRAM interface timing; see Figs 24 to 28
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
DD
acc;CA
hCA;RAS
su;CA
su;RA
acc;CAS
h;CA
W;CAS
h;CAS
CASLZ
pCAS
acc;pCAS
pCAS;RAS
h;CAS
su;CAS
wCASL
h;DAT
hDAT;RAS
su;DAT
d;OFF
cy;FPR/W
cy;FPR-W
acc;RAS
dRAS;CA
h;RA
W;RAS
W;RASFP
CA;RASL
cy;R/W
dRAS;CAS
su;R
hrR;CAS
REF
pRAS
pRAS;CAS
hr;RAS
h;RAS
cy;R-W
SYMBOL
Error correction and host interface IC for
CD-ROM (SEQUOIA)
= 4.75 to 5.25 V; V
DRAM interface (the SAA7385 is designed to operate with standard 70 ns DRAMs)
access time from column address
column address hold time from RAS
column address set-up time
row address set-up time
access time from CAS
column address hold time
CAS pulse width
CAS hold time (CBR refresh)
CAS to output in low impedance
CAS precharge time
access time from CAS precharge
CAS to RAS precharge time
CAS hold time
CAS set-up time (CBR refresh)
write command to CAS lead time
data input hold time
data input hold time from RAS
data input set-up time
output buffer turn off delay
fast page mode read or write cycle time
fast page mode read-write cycle time
access time from RAS
RAS to column address delay time
row address hold time
RAS pulse width
RAS pulse width (fast page mode)
column address to RAS lead time
random read or write cycle time
RAS to CAS delay time
read command set-up time
read command hold time (referenced to CAS)
refresh period
RAS precharge time
RAS to CAS precharge time
read command hold time (referenced to RAS)
RAS hold time
read-write cycle time
SS
= 0 V; T
amb
= 10 to +70 C; unless otherwise specified.
PARAMETER
55
55
0
0
15
20
15
3
10
5
70
5
20
15
55
0
3
40
note 1
15
10
70
70
35
130
20
0
0
50
0
0
20
n/a
(1)
MIN.
35
20
10000
40
20
70
35
10000
100000
50
32
Preliminary specification
MAX.
SAA7385
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
UNIT